Multiplexing circuit with feedback to a constant current source

Claim 1

A SEMICONDUCTOR CIRCUIT FOR TRANSLATING A VOLTAGE SIGNAL FROM AN INPUT TERMINAL TO A LOAD COMPRISING, FIRST AND SECOND SEMICONDUCTOR SIGNAL TRANSLATING DEVICES, EACH COMPRISING AT LEAST ONE P-N JUNCTION WITH FIRST AND SECOND ELECTRODES, CONNECTED THERETO IN LIKE MANNER, MEANS FOR CONNECTING SAID INPUT TERMINAL TO THE FIRST ELECTRODE OF SAID FIRST DEVICE, MEANS FOR CONNECTING THE FIRST ELECTRODE OF SAID SECOND DEVICE TO SAID LOAD, MEANS FOR DIRECTLY CONNECTING THE SECOND ELECTRODE OF SAID FIRST DEVICE TO THE SECOND ELECTRODE OF SAID SECOND DEVICE, BIASING MEANS COMPRISING A CONSTANT CURRENT SOURCE CONNECTED TO SAID FIRST AND SECOND DEVICES FOR CAUSING SAID SECOND DEVICE TO TRANSMIT TO SAID LOAD AN OUTPUT VOLTAGE SIGNAL EQUAL TO A VOLTAGE SIGNAL AT SAID INPUT TERMINAL, SAID MEANS INCLUDING A NON-INVERTING CURRENT AMPLIFIER OF SUBSTANTIALLY UNITY VOLTAGE GAIN HAVING ITS INPUT TERMINAL COUPLED TO THE FIRST ELECTRODE OF SAID SECOND DEVICE AND ITS OUTPUT TERMINAL CONNECTED TO SAID LOAD FOR TRANSLATING SAID OUTPUT SIGNAL TO SAID LOAD, AND A CURRENT PATH FROM THE OUTPUT TERMINAL OF SAID AMPLIFIER TO SAID CONSTANT CURRENT SOURCE TO MAINTAIN THE CURRENT THROUGH SAID DEVICES EQUAL.